Marvel Comics © December 1967, Fantastic Four #69.  The story is "By Ben Betrayed!".  Ben is driven mad by the treatments of Dr. Santini, revealed to be the Mad Thinker, and attacks the rest of the FF.

Characters:  Fantastic Four [Human Torch [Johnny Storm]; Invisible Girl [Susan Storm Richards]; Mr. Fantastic [Reed Richards]; The Thing [Ben Grimm]]; Crystal [Crystalia Amaquelin Maximoff]; Mad Thinker; Doctor Jose Santini; Marty; Bill

Script: Stan Lee, Jack Kirby    Pencils: Jack Kirby    Inks: Joe Sinnott 

This book appears (vg/f 56), w/ the expected nics, tics, wear and tear.  Dust shadow.  Thanks for looking.     0651-1011-56